<!doctype html>
<title>javascript无缝滚动  by 司徒正美</title>
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<meta name="keywords" content="javascript无缝滚动 by 司徒正美" />
<meta name="description" content="javascript无缝滚动  by 司徒正美" />
<base href="http://www.cnblogs.com/rubylouvre/archive/2009/">
<style type="text/css">
  h1 {
    font:400 16px/1 "Microsoft YaHei",KaiTi_GB2312,SimSun
  }
  #marquee,#marquee li {
    margin:0;
    padding:0;
    list-style:none;
  }
  #marquee {
    position:relative;
    height:100px;
    width:280px;
    overflow:hidden;
    border:10px solid #c0c0c0;
  }
  #marquee a {
    display:block;
    padding:5px;
    text-decoration:none;
    white-space: nowrap;
    color:#000;
  }
  #marquee a:hover {
    background: #efefda;
    color:#3bcdfe
  }
</style>
<script type="text/javascript">
var Marquee = function(id){
	try{document.execCommand("BackgroundImageCache", false, true);}catch(e){};
	var container = document.getElementById(id),
		original = container.getElementsByTagName("li")[0],
		speed = arguments[1] || 10,
		clone = original.cloneNode(true);
	container.appendChild(clone);
	var rolling = function(){
		if(container.scrollTop == clone.offsetTop){
			container.scrollTop = 0;
		}else{
			container.scrollTop++;
		}
	}
	var timer = setInterval(rolling,speed);//设置定时器
	container.onmouseover=function() {clearInterval(timer)};//鼠标移到marquee上时，清除定时器，停止滚动
	container.onmouseout=function() {timer=setInterval(rolling,speed)};//鼠标移开时重设定时器
};
window.onload = function(){
	Marquee("marquee");
}
</script>
<h1>javascript无缝滚动(向上滚动) by 司徒正美</h1>
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